JP3164587U - Terminal connection structure - Google Patents

Abstract

Provided is a measuring terminal capable of improving workability of connecting a current line and a voltage monitor line to a storage battery and preventing contact between the current line and the voltage monitor line. A connecting line 2 connected to a load is connected to a distal end side 11A of a tab-shaped terminal 11 in a storage battery 1, and a current line 3 through which a current flows when measuring the internal resistance of the storage battery 1 by an AC four-terminal method. Of the measurement terminal 12 to which the voltage line 4 for measuring the AC voltage based on the internal resistance of the storage battery 1 generated by flowing current is connected to the base end side 11B of the tab-shaped terminal 11. The tip 14 was joined by soldering. [Selection] Figure 1

Description

  The present invention relates to a terminal connection structure for connecting a plurality of lead wires to the terminal, which is used when measuring a voltage between electrode terminals of a storage battery using an alternating current four-terminal method.

Conventionally, a storage battery is used as an emergency power source. The storage battery in this case needs to monitor the deterioration state of the storage battery and periodically check whether or not the storage battery can be used as a power source, and measure the internal resistance of the storage battery using the AC four-terminal method. ing.
Therefore, a current line that flows an alternating current to the storage battery when the internal resistance of the storage battery is measured together with a connection line connected to an emergency power supply (load), and a current flow through the current line to the electrode terminal of the storage battery At this time, a voltage line for measuring a voltage depending on the internal resistance of the storage battery is connected and fixed (for example, see Patent Document 1).

JP 2003-121461 A

By the way, in a storage battery having a relatively small capacity, a tab-shaped electrode terminal is generally used. However, since a tab portion to which a lead wire can be connected is small, a plurality of lead wires are connected to this tab-shaped terminal using bolts or the like. Can not be fixed to. Therefore, it is conceivable to fix a plurality of lead wires to the tab-shaped terminals by soldering, but it is difficult to fix the desired number of lead wires to the tab-shaped terminals so that they do not contact each other. Connection workability is poor, for example, the fixed lead wire is removed by heat generated when soldering the lead wire to be fixed later. In addition, when multiple lead wires are soldered to a small tab portion, the voltage and current wires may come into contact with each other and cause electrical interference, and the measured internal resistance value of the storage battery is not accurate. There is.
The present invention has been made in view of the above-described circumstances. When a plurality of lead wires are soldered to a tab-shaped terminal, the lead wires fixed earlier are soldered to the lead wires fixed later. Provided is a terminal connection structure capable of preventing the occurrence of occasional removal, improving the workability of connection of a current line and a voltage line to a storage battery, and preventing interference between the current line and the voltage line.

  In order to achieve the above-described object, the present invention provides a current flowing through one half of a tab-shaped terminal in a storage battery, when connecting the connection line connected to a load and measuring the internal resistance of the storage battery by the AC four-terminal method. The tip of the terminal for measurement which connected the voltage wire which measures the alternating voltage based on the internal resistance of the storage battery generated by sending the current to the other half of the tab-shaped terminal Are combined by soldering.

  According to this configuration, the connection line connected to the load and the current line through which a current flows when measuring the internal resistance of the storage battery are gathered on one half (the front end side or the base end side) of the tab-shaped terminal. Since the tip of the measurement terminal connected to the voltage line that measures the voltage when the current is passed through the other half (base side or tip side) is soldered, the current line and the voltage line are Wiring can be provided with a gap between each other, the contact between the current line and the voltage line can be prevented, and the internal resistance can be accurately measured. Further, the voltage line having poor connection workability can be connected to the tab-shaped terminal via the measurement terminal, and the connection workability can be improved.

In this configuration, the connection line and the current line may be bundled, and the voltage line may be coupled to the bundle so as to be orthogonal to each other.
According to this configuration, since the current line and the voltage line are orthogonally connected to the tab-shaped terminal, it is possible to reliably prevent the current line and the voltage line from coming into contact with each other. The line is not subject to interference from the current line. Therefore, the voltage can be accurately measured, and the measurement accuracy of the internal resistance is improved.

In addition, measurement is performed so that the end of the measurement terminal is folded and formed in a U shape, and the measurement terminal is orthogonal to the tab-shaped terminal in one half or the other half of the tab-shaped terminal. It is good also as a structure which hooked and connected the front-end | tip of the terminal for the said tab-shaped terminal.
According to this configuration, the tip of the measurement terminal can be hooked on the tab-shaped terminal so that the measurement terminal and the tab-shaped terminal can be coupled, so the tab shape of the voltage line connected to the measurement terminal The workability of connecting to the terminal is improved. Furthermore, since the tip of the measurement terminal is hooked and coupled to the tab-shaped terminal and then soldered to the tab-shaped terminal, the bonding strength of the voltage line to the tab-shaped terminal is improved.

The tip of the measurement terminal may be folded back to have a C-shaped cross section, and one half of the tab-shaped terminal may be inserted into the measurement terminal and coupled.
In this configuration, by inserting the tab-shaped terminal at the tip of the measuring terminal, the measuring terminal and the tab-shaped terminal are easily coupled, so that the workability of connecting the voltage line can be improved. In addition, since the tip of the measurement terminal is soldered to the tab-shaped terminal after the tab-shaped terminal is inserted into the tip of the measurement terminal, the bonding strength of the voltage line to the tab-shaped terminal is improved.

  According to the present invention, one half of the tab-shaped terminal is soldered together with a connection line connected to the load and a current line through which a current flows when measuring the internal resistance of the storage battery, and is soldered to the other half. Since the tip of the measurement terminal connected to the voltage line that measures the voltage when the current is passed is connected by soldering, the current line and the voltage line can be wired with a gap between them. Can be prevented, and the internal resistance can be measured accurately. Further, the voltage line having poor connection workability can be connected to the tab-shaped terminal via the measurement terminal, and the connection workability can be improved.

It is a perspective view which shows the terminal connection structure of a storage battery. It is a perspective view which shows the structure of the terminal for a measurement. It is a perspective view which shows the connection structure of the terminal for a measurement, and the terminal of a storage battery. It is a perspective view which shows the structure of the terminal for a measurement of another embodiment. It is a perspective view which shows the connection structure of another embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a terminal connection structure according to an embodiment to which the present invention is applied. Reference numeral 1 denotes, for example, a small sealed storage battery used as an emergency power source, and the storage battery 1 includes a pair of tab-shaped terminals 11 and 11. Although not shown, the pair of tab-shaped terminals 11 is provided with a positive electrode column and a negative electrode column provided in an electrode plate group formed by alternately laminating a positive electrode plate and a negative electrode plate accommodated inside the storage battery 1. It is connected to the.

  This storage battery 1 needs to measure an internal resistance value regularly (for example, every hour) and determine whether the storage battery 1 has deteriorated. The internal resistance of the storage battery 1 is measured using an alternating current four-terminal method. The storage battery 1 is first connected to a load (not shown) by a connection line (current line) 2. Further, in the AC four-terminal method, a tab is connected to a current line 3 for supplying a specified AC current from an AC power source (not shown) to the storage battery 1 at a preset time interval and an AC voltmeter (not shown). A voltage line 4 for measuring a voltage between the shape terminals 11 is used. That is, in the AC four-terminal method, when a current is passed through the storage battery 1 through the current line 3, a voltage drop occurs between the tab-shaped terminals 11 of the storage battery 1 depending on (proportional to) the internal resistance of the storage battery 1. This voltage drop is measured with an AC voltmeter (not shown), and the internal resistance of the storage battery 1 is measured. In FIG. 1, three lines 2 to 4 are connected only to one terminal 11, but three lines 2 to 4 (not shown) are similarly connected to the other terminal 11. Needless to say.

  The connection line 2 and the current line 3 are soldered together along the longitudinal direction of the terminal 11 to the tip side (one half) 11A of the tab-shaped terminal 11. In the example shown in the figure, the connecting wire 2 and the current wire 3 are formed by binding the wire portions stripped of the coverings in advance to form a bundle, and the storage battery of the tab-shaped terminal 11 on the tip side 11A of the tab-shaped terminal 11. The connection line 2 and the current line 3 are connected so as to extend in a direction extending from 1.

  As shown in FIG. 2, the voltage line 4 is fixed to the end portion 13 of the measurement terminal 12 by crimping. An engaging portion 15 for connecting and fixing the measurement terminal 12 to the tab-shaped terminal 11 is formed at the distal end 14 of the measurement terminal 12. The engaging portion 15 is formed by bending the distal end 14 of the measurement terminal 12 into a U shape, and a hook portion 15b is formed that is bent from the distal end portion 15a of the measurement terminal 12 to the end portion 13 side of the measurement terminal 12. Has been. A first crimping portion 21 that crimps the voltage wire 4 from the outside of the coating toward the measuring terminal 12 in the direction from the distal end 13 toward the tip 14, and a second crimp that crimps the electric wire facing the coating of the voltage wire 4. The part 22 is formed side by side. A standing portion 23 is formed on the tip 14 side of the second crimping portion 22, and the length L1 from the tip 23 a on the tip 14 side of the standing portion 23 to the tip portion 15 a is the tab shape of the storage battery 1. The terminal 11 is formed to have substantially the same length as the width W1 (see FIG. 3). The length L2 of the hook portion 15b is formed to be approximately half the width W1 of the tab-shaped terminal 11.

The width W2 of the engaging portion 15 of the measurement terminal 12 is formed to be approximately half the length L3 of the portion of the tab-shaped terminal 11 extending from the storage battery 1.
As shown in FIG. 3, the measurement terminal 12 is configured such that the engagement portion 15 is hooked on the base end side 11 </ b> B of the tab-shaped terminal 11 from the lower side of the tab-shaped terminal 11. Are connected so as to be substantially orthogonal to the tab-shaped terminals 11. At this time, the tab-shaped terminal 11 is held between the distal end portion 15a of the engaging portion 15 and the end 23a of the standing portion 23, and the measurement terminal 12 and the tab-shaped terminal 11 are coupled to each other. Has been.
The distal end 14 of the measurement terminal 12 is soldered to the base end side (the other half) 11B of the tab-shaped terminal 11 and coupled to the terminal 11. At this time, the voltage line 4 is coupled to the terminal 11 substantially orthogonally to the bundle of the connection line 2 and the current line 3.

  In addition, when the connection wire 2 and the current wire 3 are soldered to the distal end side 11A of the tab-shaped terminal 11, although not shown, the hook portion 15b and the standing portion 23 of the measurement terminal 12 are omitted. The melted solder is also attached to the end 23a of the, and the measurement terminal 12 is joined to the tab-shaped terminal 11 by soldering. In this configuration, by hooking the measurement terminal 12 to the tab-shaped terminal 11, the voltage line 4 can be easily connected to the terminal 11, and the connection workability of the voltage line 4 can be improved. Further, since the measurement terminal 12 is soldered to the tab-shaped terminal 11 after the measurement terminal 12 is hooked on the terminal 11, the coupling strength when the voltage line 4 is coupled to the tab-shaped terminal 11 is improved. Can do.

  In the present embodiment, the measurement terminal 12 is coupled to the base end side 11B of the tab-shaped terminal 11, but the measurement terminal 12 is coupled to the distal end side 11A of the tab-shaped terminal 11. It is good also as a structure. In this case, although not shown, the connection line 2 and the current line 3 are soldered to the base end side 11B of the tab-shaped terminal 11 so as to be orthogonal to the voltage line 4 and not to contact the voltage line 4. The connection line 2 and the current line 3 may be wired in the direction opposite to the extending direction of the tab-shaped terminal 11 from the storage battery 1.

Next, another embodiment will be described. In the following description, the same components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 4, the measurement terminal 12 </ b> A has an engagement portion 35 formed in a substantially C-shaped cross section at the tip 14 fixed to the tab-shaped terminal 11.
As shown in FIG. 5, the engaging portion 35 is inserted into the distal end side 11 </ b> A of the tab-shaped terminal 11 so that the opening portion 35 b of the engaging portion 35 faces upward. The length L4 between the tip 35a of the engaging portion 35 and the end 23a of the standing portion 23 is formed to be approximately half the length L3 of the tab-shaped terminal 11 extending from the storage battery 1. Yes.

According to this configuration, the measurement terminal 12 is connected to the tab-shaped terminal 11 in a state where the distal end side 11 </ b> A of the tab-shaped terminal 11 is inserted into the engaging portion 35. The connection line 2 and the current line 3 are bundled together on the base end side 11B of the tab-shaped terminal 11 and fixed by soldering. At this time, the line in which the connection line 2 and the current line 3 are bundled together is wired so as to be substantially orthogonal to the voltage line 4.
In addition, when soldering the line in which the connection line 2 and the current line 3 are combined to the tab-shaped terminal 11, the illustration is omitted, but the opening part 35 b of the engaging part 35 of the measurement terminal 12 is also melted. The engaging portion 35 is soldered to the terminal 11 by attaching the solder. According to this structure, since the opening part 35b of the engaging part 35 is provided upward, when welding the line which bundled the connection wire 2 and the current wire 3 to the tab-shaped terminal 11, it welds. The melted solder can be easily attached to the opening portion 35b. Therefore, it is possible to improve the efficiency of connection work for connecting the connection line 2, the current line 3, and the voltage line 4 to the terminal 11, and the connection strength of the voltage line 4 to the tab-shaped terminal 11. Can be improved.

As described above, according to the present embodiment, when the internal resistance of the storage battery 1 is periodically measured using the AC four-terminal method, the connecting line is connected to the distal end side 11A of the tab-shaped terminal 11 of the storage battery 1. 2 and the current line 3 are bundled together and joined together by soldering, so that the voltage line can be accurately measured without receiving interference from the current line, and the measurement accuracy of the internal resistance is improved. improves.
Further, since the voltage line 4 is coupled to the base end side 11B of the tab-shaped terminal 11 so as to be orthogonal to the connection line 2 and the current line 3, the current line 3 and the voltage line 4 are not in contact with each other, and the internal Resistance measurement accuracy is improved.

DESCRIPTION OF SYMBOLS 1 Storage battery 2 Connection line 3 Current line 4 Voltage line 11 Tab-shaped terminal 11A One half 11B Other half 12, 12A Measurement terminal 14 Tip 15, 35 Engagement part

Claims (4)

Soldering together the connection line connected to the load and the current line through which the current flows when measuring the internal resistance of the storage battery by the AC 4 terminal method, to one half of the tab-shaped terminal in the storage battery,
The other half of the tab-shaped terminal is connected by soldering to the tip of a measuring terminal connected to a voltage line for measuring an AC voltage based on the internal resistance of the storage battery generated by flowing the current. Characteristic terminal connection structure. In the terminal connection structure according to claim 1,
The terminal connection structure, wherein the connection line and the current line form a bundle, and the voltage line is coupled to the bundle so as to be orthogonal to each other. In the terminal connection structure according to claim 1 or 2,
The tip of the measurement terminal is folded back and formed into a U shape, and the measurement terminal is hooked to one half or the other half of the tab-shaped terminal so as to be orthogonal to the tab-shaped terminal. Terminal connection structure characterized by being made. In the terminal connection structure according to claim 1 or 2,
A terminal connection structure, wherein a tip end of the measuring terminal is formed in a C-shaped cross section, and one half of the tab-shaped terminal is inserted into the measuring terminal and coupled.

Images